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If, however, you can feel the pads contact the rotor in the usual spot in your lever throw, you’re probably not dealing with air bubbles in the system. If the lever simply sinks to the handlebar, you’ve got air. Straddle your bike and, with the bike stationary, pull the brake lever. Air in the system is pretty easy to diagnose. Don't judge me.Ī loss of braking power is usually the result of one of two things: air in the system or contaminated/glazed/worn brake pads. Less glazed, more worn.either way it was time for a change. If, like me, you still freak out if someone gets within a few inches of touching your brake rotor, you can always do the rotor-grab maneuver while wearing clean latex gloves. Or maybe it doesn’t make sense to you, in which case, just watch the video. It sounded crazy to me, but if you think about it, it actually makes sense. Again, the guy has worked on more brakes than most of us have ever seen, so he didn't pull this maneuver out of the ether or his backside. This procedure is not an exact science-Monica readily admits it’s more of a finesse move, but I’ve seen him do it and, yeah, it works on every brand of disc brake. Doing this helps re-center, as it were, the pistons themselves within the caliper. Then, after wiping his hands on something clean, he pulls the rotor into the rubbing pad with one hand, then pumps the corresponding brake lever with his other hand. He does that by determining which side of the caliper (inboard or outboard) is getting the rotor rub. The pistons, Jude argues, are what you want to manipulate-not the entire caliper body-and you can use the rotor to help you do that.Īgain, you can solve this issue pretty easily by re-centering the caliper itself, but Jude’s approach is to simply reverse what happened on the trail. What has shifted, however, are the pistons’ placement inside that caliper. After all, it’s not as if your caliper suddenly moved during the ride-those two bolts do a good job of keeping it rooted to your frame. Jude, however, suggests that this approach often misses the point. If you’re like me, you probably rectify that particular problem by loosening the caliper’s two mounting bolts and realigning the brake caliper. So in this case, let’s assume your rotor has begun a constant slight rubbing against one of your brake pads. If it’s an intermittent rubbing, it probably signals a bent rotor and, well, it’s time to either true the rotor or cough up the cash for a new one. By consistently, I mean a constant, slight dragging against one of the brake pads. I’m talking about that moment, mid–ride, when your rotor suddenly starts rubbing consistently against one of your brake pads. Or maybe you never set up your disc brake caliper correctly and the rotor has been rasping away since day one.īut we’re not talking about those situations here. Maybe you completely taco’d the crap out of your wheel…that’s always hard to miss. Supplied ready to use, with a 2000mm long cable, including brake pads and IS adaptor (+0mm or +20mm, choose one).There are plenty of reasons why your rotor may begin rubbing against the brake pads.
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Its design ensures a powerful braking performance, precise adjustment range and easy maintenance. The Avid BB5 Post Mount caliper allows you to adjust distance between each pad and rotor independently, so you can always get the desired lever feel without rubbing. Lever reach can be adjusted with a screw. The handlebar clamp only uses 1 bolt, for a simpler, lighter design. Moreover, the Avid FR5 lever features Bend Zone technology, which allows for higher energy absorption in impacts, preventing the lever from being damaged or splitting in half. The Avid FR5 is made of lightweight aluminium alloy, it’s reversible and allows for a solid lever feel. Avid BB5 Post Mount caliper (including IS adaptor and brake pads, rotor not included).The brake comes ready to use and includes: This is a brake with enormous braking power and modulation, so it’s ideal for bike trials, MTB and Enduro. If you’re looking for a powerful brake with modulation for bike trials and MTB, look no further than the Avid BB5 disc bake! The Avid BB5 is a high-performance, great value cable disc brake.